Hello, syzbot found the following issue on: HEAD commit: 2347b4c79f5e Add linux-next specific files for 20240723 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=10d8ad3d980000 kernel config: https://syzkaller.appspot.com/x/.config?x=befe10ad51f9f2bb dashboard link: https://syzkaller.appspot.com/bug?extid=198e5d62f814bce1e600 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/9ccc2b0cb372/disk-2347b4c7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/469c95cf67be/vmlinux-2347b4c7.xz kernel image: https://storage.googleapis.com/syzbot-assets/25b4013add8e/bzImage-2347b4c7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+198e5d62f814bce1e600@xxxxxxxxxxxxxxxxxxxxxxxxx smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) Running RCU Tasks wait API self tests Running RCU Tasks Trace wait API self tests Performance Events: unsupported p6 CPU model 79 no PMU driver, software events only. signal: max sigframe size: 1776 rcu: Hierarchical SRCU implementation. rcu: Max phase no-delay instances is 1000. Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at kernel/time/timer_migration.c:1714 tmigr_cpu_prepare+0x10e4/0x1330 kernel/time/timer_migration.c:1714 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.10.0-next-20240723-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:tmigr_cpu_prepare+0x10e4/0x1330 kernel/time/timer_migration.c:1714 Code: 0d 00 e9 41 fe ff ff e8 ea d3 0d 00 e9 37 fe ff ff 80 3d 81 ea 13 0e 01 75 26 e8 d7 d3 0d 00 e9 24 fe ff ff e8 cd d3 0d 00 90 <0f> 0b 90 e9 a8 ef ff ff e8 bf d3 0d 00 90 0f 0b 90 e9 6e ff ff ff RSP: 0000:ffffc900000676f0 EFLAGS: 00010293 RAX: ffffffff8185f723 RBX: 0000000000000000 RCX: ffff8880172a8000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff8880b942d2a0 R08: ffffffff8185e6c6 R09: 1ffffffff1f5f34d R10: dffffc0000000000 R11: ffffffff8185e640 R12: dffffc0000000000 R13: 0000000000000040 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000e134000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> cpuhp_invoke_callback+0x48d/0x830 kernel/cpu.c:194 cpuhp_issue_call+0x46f/0x7e0 __cpuhp_setup_state_cpuslocked+0x464/0x730 kernel/cpu.c:2505 __cpuhp_setup_state+0x3f/0x60 kernel/cpu.c:2534 cpuhp_setup_state include/linux/cpuhotplug.h:277 [inline] tmigr_init+0x231/0x2a0 kernel/time/timer_migration.c:1794 do_one_initcall+0x248/0x880 init/main.c:1267 do_pre_smp_initcalls+0x57/0xa0 init/main.c:1373 kernel_init_freeable+0x40d/0x5d0 init/main.c:1567 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
